Abstract: This invention relates to poly(ester amide)s (PEAs) comprising inactivated terminal amino and carboxyl groups, methods of synthesizing the inactivated PEAs and uses for them in the treatment of vascular diseases.

Abstract: The present invention is directed to alkanal derivatives of water-soluble polymers such as poly(ethylene glycol), their corresponding hydrates and acetals, and to methods for preparing and using such polymer alkanals. The polymer alkanals of the invention are prepared in high purity and exhibit storage stability.

Abstract: It is a joining auxiliary agent for a polyamide resin with which a predetermined joining face of a polyamide resin molded article is coated to ensure the joining strength between the predetermined joining face and another polyamide resin when they are joined together, and has a composition containing a compound (1), which cleaves a hydrogen bond in the polyamide resin molded article while assisting the dissolution of the polyamide resin, in an organic solvent capable of dissolving the polyamide resin.

Abstract: A polymer coating for implantable medical devices based on polyorthoesters and methods for fabricating the coating are disclosed. The implantable medical devices made of polyorthoesters and methods for fabricating thereof are also disclosed.

Abstract: The invention relates to a rotomolding process for forming a multi-layer article of two different polymers with different melting points in which an outer layer polymer powder is added to a rotational molder along with an inner layer polymer powder that is separated from the outer layer powder by a release film. The release film has a particular melting point that is greater than that of the outer layer polymer and preferably between the melting points of the inside layer and outside layer polymers. In one embodiment, the release layer forms an enclosure or bag in which the inner layer (higher melting point) powder is enclosed. In another embodiment the release film forms a barrier between an insulated cavity and the mold. The process provides a means for a “one-shot” rotomolding method.

Abstract: Described herein are compositions and methods useful for the purification of water using dendritic macromolecules. The process involves using dendritic macromolecules (dendrimers) to bind to contaminants, and a filtration step to produce water from which contaminants have been removed or modified. Examples of dendrimers that may be used in the process include cation-binding dendrimers, anion-binding dendrimers, organic compound-binding dendrimers, redox-active dendrimers, biological compound-binding dendrimers, catalytic dendrimers, biocidal dendrimers, viral-binding dendrimers, multi-functional dendrimers, and combinations thereof. The process is readily scalable and provides many options for customization.

Abstract: The invention provides methods and compositions having one-dimensional nanoparticle chains. A one-dimensional nanoparticle chain can comprise a linear substantially non-crosslinked polymer having pendant groups and asymmetrically functionalized nanoparticles attached to the polymer through the pendant groups. Additionally, an asymmetrically functionalized nanoparticle can comprise a nanoparticle core having an outer surface, a primary group of first ligands attached to a substantially continuous primary region of the outer surface, and a secondary group of second ligands attached to a substantially continuous secondary region of the outer surface, such that the primary group of first ligands and the secondary group of second ligands comprise a different ligand population.

Abstract: Disclosed is a resin composition comprising a benzoxazole resin precursor having a first repeating unit obtained by reacting a bisaminophenol compound and a dicarboxylic acid compound, and a cross-linking agent wherein at least one of the bisaminophenol compound and the dicarboxylic acid compound has a diamondoid structure. The benzoxazole resin precursor further comprises a second repeating unit obtained by reacting a bisaminophenol compound not having a diamondoid structure and a dicarboxylic acid compound not having a diamondoid structure. Also disclosed is a resin film comprising the resin composition.

Abstract: A polyamide resin composition which can improve heat resistance and water absorbency while suppressing the deterioration of processability is provided. Provided is a polyamide resin composition having an aromatic polyamide resin and an epoxy group-containing phenoxy resin having an epoxy group in the molecule of the phenoxy resin, wherein the content of the epoxy group-containing phenoxy resin is 30 to 50% by mass.

Abstract: The invention relates to a process for the production of a nitrogen containing epihalohydrin polymer involving reaction of a nitrogen-containing precursor selected from the group consisting of amines, poly-amines, polyaminoamides, polyurethanes and mixtures thereof with epihalohydrin to form of a solution of said epihalohydrin polymer, the process comprising a purification step to remove organic impurities from the formed solution of the epihalohydrin polymer, said purification step comprising contacting the solution of the epihalohydrin polymer with a fluid under liquid, supercritical or near supercritical conditions to effect extraction of organic impurities from the solution of the epihalohydrin polymer to the fluid, withdrawing fluid enriched in organic impurities from the solution of the epihalohydrin polymer, and separating extracted impurities from the withdrawn fluid, wherein the fluid comprises a substance that at atmospheric pressure and room temperature (about 25° C.) is gaseous.

Abstract: The invention relates to a process for preparing a flame retardant polyamide compound comprising melt-mixing of a composition comprising at least a polyamide polymer having a weight-average molecular weight of at least 10.000 g/mol, an amount of 1-100 wt. % relative to the total weight of polyamide of a flame retardant, and an amount of 0.1-30 wt. %, relative to the total weight of polyamide, of a polyamide oligomer having a weight-average molecular weight of at most 7.500 g/mol.

Abstract: A polyimide film which, especially when superposed on a metal layer by the laminating method, has the function of diminishing the thermal distortion to be imposed on the material; an adhesive film and a flexible metal-clad laminate each comprising or obtained with the polyimide film. the polyimide film is obtained by reacting an aromatic diamine with an aromatic acid dianhydride and imidiating the polyamic acid obtained, and has a storage elastic modulus in a specific range.

Abstract: The present disclosure relates to a high molecular weight, monoesterified polyimide polymer. One method as described herein relates to making the high molecular weight, monoesterified polyimide polymer. According to its broadest aspect, the method for making the high molecular weight, monoesterified polyimide polymer comprises the following steps: (a) preparing a polyimide polymer comprising carboxylic acid functional groups from a reaction solution comprising monomers and at least one solvent; and (b) treating the polyimide polymer with a diol at esterification conditions in the presence of dehydrating conditions to form a monoesterified polyimide polymer, wherein the dehydrating conditions at least partially remove water produced during step (b). Such high molecular weight, monoesterified polyimide polymers are useful in forming crosslinked polymer membranes for the separation of fluid mixtures.

Abstract: The present invention relates to a novel polybenzimidazole-benzamide copolymer composed of the repeating units represented by formula 1 which is applicable to the electrolyte membrane of fuel cell and a preparation method of the same. The present invention also relates to an electrolyte membrane produced from the above copolymer of the invention and a preparation method thereof. The present invention further relates to a membrane-electrode unit for fuel cell containing the electrolyte membrane of the invention and a fuel cell system including the unit. The electrolyte membrane prepared by the polybenzimidazole-benzamide copolymer of the invention has improved proton conductivity, compared with the conventional polybenzimidazole polymer membrane, and has thermal and chemical stability in addition to the operating capacity in a wide temperature range. Wherein, x is 0.1˜99.9.

Abstract: The invention relates to crosslinkable, thermoplastic polyamide molding compounds. The polyamides are selected from a group comprising amorphous or microcrystalline polyamides, copolyamides thereof and blends thereof, as well as blends of such polyamides with semicrystalline polyamides. A polyamide molding compound according to the invention is characterized in that it comprises a crosslinking additive which causes the production of crosslinked molded parts formed from said polyamide molding compound under the effect of high-energy irradiation, having a Tg value of >140° C. and a minimum dimensional stability of 90% at temperatures of ?180° C. These polyamides have a substantially linear structure and the monomers thereof have no olefin C?C double bonds. Corresponding crosslinked polyamide molded parts produced from a polyamide molding compound and the use of this polyamide molding compound to produce these crosslinked polyamide molded parts are additionally disclosed.

Abstract: A multilayered modified membrane and method for making the same, comprising a modified discriminating layer that can have a fouling resistant surface, improved salt rejection, antimicrobial properties, and/or improved solute, and/or small organics rejection as compared to membranes with unmodified discriminating layers.

Abstract: The present invention relates to a silphenylene compound represented by the following formula (1): in which R1 to R4 each independently represents a hydrogen atom or a monovalent hydrocarbon group having 1 to 6 carbon atoms, and R5 and R6 each independently represents a divalent hydrocarbon group having 2 to 8 carbon atoms. The silphenylene compound of the present invention is useful as a flexible printed wiring board material, a passivation film for IC chips, and a panel material for liquid crystals.

Abstract: The present invention is related to a polymer comprising terminal sulfonic acid groups, which has a high ionic conductivity and good structural stability, does not decompose even under low humidity conditions, and is inexpensive to produce. Furthermore, the present invention is related to a polymer electrolyte and a fuel cell using the same. The polymer of the present invention has a substituent comprising a terminal sulfonic acid group comprising Formula (1) at a side chain: where n may be a number in the range of about 1 to about 5.

Abstract: The present invention discloses method for making defect-free high performance mixed matrix membranes (MMMs) containing a continuous polymer matrix and dispersed molecular sieves such as AlPO-14 or UZM-5. These MMMs can be used for separations. The novel method for making defect-free high performance MMMs comprises: post treating the MMM at a temperature ?150° C. This new method results in a MMM with either no macrovoids or voids of less than 5 angstroms at the interface of the continuous polymer matrix and the molecular sieves. The MMMs are in the form of symmetric dense film, thin-film composite (TFC), asymmetric flat sheet or asymmetric hollow fiber. These MMMs have good flexibility and high mechanical strength, and exhibit high carbon dioxide/methane (CO2/CH4) selectivity and high CO2 permeance for CO2/CH4 separation. The MMMs are suitable for a variety of liquid, gas, and vapor separations.

Abstract: A polymeric matrix having improved flowability and wettability is provided, as well as a process for making it. The matrix contains a polyamide and a polyhydric alcohol which is chemically bonded at least to a part of the polyamide, and it is suitable particularly for manufacturing fiber-reinforced polyamide articles exhibiting a very good surface appearance and excellent mechanical properties.

Abstract: Polyamides containing repeat units derived from about 10 to about 35 weight percent 1,6-diaminohexane and terephthalic acid, up to 10 weight percent of other polyamide repeat units, and the remainder of the repeat units derived from 1,6-diaminohexane and adipic acid may be toughened with exceptionally small amounts of rubber tougheners, to give compositions which are especially tough. The resulting compositions are useful for industrial, consumer, electronics, and automotive parts.

Abstract: The invention relates to mixtures of compounds of the formulae (I), (III), (IV), and/or (V), in which n is an average chain length of from 0 to 10, A1 and A2 are identical or different and, independently of one another, are C(?O)NHR5, C(?O)R5, CH3, CH2CH3, CH2CH2CH3, CH(CH3)2, CH2(CH2)2CH3, CH2CH(CH3)2, C(CH3)3, C6H5, and/or CH2—C6H5, R1 is a moiety of the formula (II), in which k is an average chain length of from 0 to 5; R2 is CH3, CH2CH3, CH2CH2CH3, CH2(CH3)2, CH2(CH2)2CH3, CH2CH(CH3)2, C(CH3)3, C6H5, or CH2—C6H5; OCH3, OCH2CH3, O(CH2)2CH3, OCH(CH3)2, O(CH2)3CH3, OCH2CH(CH3)2, OC(CH3)3, O—C6H5, or O—CH2—C6H4, R3, R4, R5 are identical or different and, independently of one another, are CH3, CH2CH3, CH2CH2CH3, CH(CH3)2, CH2(CH2)2CH3, CH2Ch(CH3)2, C(CH3)3, C6H5, and/or CH2—C6H5 and where at least 2 compounds of the formulae (I), (III), (IV), or (V) are simultaneously present in the mixture; to a process for their preparation, and to their use as flame retardants.

Abstract: An object of the present invention is to provide a high-strength polyester fiber suitable for industrial materials, in particular, for a tire cord. The high-strength polyester fiber of the present invention is a polyester high-strength fiber comprising a polyester resin and a polycarboxylic acid-based amide compound, wherein the polyester fiber has a strength of 8.8 cN/dtex or more.

Abstract: The invention provides nanoparticles consisting of a polymer which is a metal chelating agent coated with a magnetic metal oxide, wherein at least one active agent is covalently bound to the polymer, said nanoparticles may optionally further comprise at least one active agent physically or covalently bound to the outer surface of the magnetic metal oxide. Pharmaceutical compositions comprising these nanoparticles may be used, inter alia, for detection and treatment of tumors and inflammations.

Abstract: Elastomer precursor gum (for any of fluoroelastomer, acrylic acid ester rubber/polyacrylate rubber, ethylene acrylic rubber, silicone, nitrile butyl rubber, hydrogenated nitrile rubber, natural rubber, polyurethane, and styrene butadiene rubber) and non-gum polymer are admixed with optional electrically conductive particulate and/or optional filler to provide either a continuous phase of polymer with dispersed gum portions, a continuous phase of elastomer precursor gum with dispersed polymer portions, or an interpenetrated structure of elastomer precursor gum and polymer. Curing is optionally enabled with techniques such as electron beam radiation.

Abstract: A semi-crystalline, absorbable copolyester composition comprising the reaction product of a polycondensation polyester and at least one lactone, wherein the polycondensation polyester comprises the reaction product of diglycolic acid and/or a derivative thereof and diethylene glycol; and the copolyester comprises about 30 to 60% by weight of the polycondensation polyester based on the total weight of the copolyester. Also medical devices such as absorbable sutures comprising such copolyesters and absorbable microspheres comprising such copolyesters and methods of making of such absorbable microspheres. Additionally, a method of melt blowing an absorbable copolyester composition and a nonwoven construct are disclosed.

Abstract: Thermosetting resin compositions for manufacturing circuit boards and build-up circuit boards, and build-up boards, and multilayer bodies and circuit boards manufactured using these compositions are provided. A composition contains polyimide resin (A), phenol resin (B), and epoxy resin (C) components. The mixing ratio by weight (A)/[(B)+(C)] is 0.4 to 2.0, the ratio being the ratio of the weight of (A) to the total weight of (B) and (C). By using such a composition, multilayer bodies and circuit boards, excellent in dielectric characteristics, adhesiveness, processability, heat resistance, flowability, etc. can be manufactured. A composition contains a polyimide resin (A), a phosphazene (D), and a cyanate ester (E). D includes a phenolic hydroxyl group-containing phenoxyphosphazene (D-1) and/or a crosslinked phenoxyphosphazene (D-2) prepared by crosslinking (D-1), (D-2) having at least one phenolic hydroxyl group.

Abstract: A semi-aromatic polyamide resin is provided which has a high level of residence stability, hot-water resistance and chemical resistance and is also excellent in adhesive properties and compatibility with other resins and the like. The semi-aromatic polyamide resin comprises: dicarboxylic acid units in which 50 to 100 mol % of the dicarboxylic acid units are aromatic dicarboxylic acid units; and diamine units in which 60 to 100 mol % of the diamine units are aliphatic diamine units having 9 to 13 carbon atoms. Furthermore, at least 10% of terminal groups of molecular chains of the polyamide resin are blocked with a terminal-blocking agent, and the amount of terminal amino groups of the molecular chains is 60 ?eq/g or more and 120 ?eq/g or less. In addition, [NH2]/[COOH]?6 is satisfied, where [NH2] (?eq/g) represents the amount of the terminal amino groups and [COOH] (?eq/g) represents the amount of terminal carboxyl groups.

Abstract: Powder coating binders having a glass temperature of ?35° C. containing at least one polymer and one or more radiation-curing reactive thinners, a process for the production of these powder coating binders and their use as a component of powder coatings.

Abstract: Disclosed herein is a polymer blend comprising a first polycarbonate comprising a first structural unit derived from a 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine and a second structural unit derived from a dihydroxy aromatic compound, wherein the second structural unit is not identical to the first structural unit, and a second polycarbonate comprising a structural unit derived from a dihydroxy aromatic compound, wherein the polymer blend has a glass transition temperature of 155 to 200° C.; and wherein a test auricle having a thickness of 3.2 mm and molded from the blend has a haze of less than or equal to 3.0 measured in accordance with ASTM D1003-00. A method of making the polymer blend, and articles prepared from the blend, are also disclosed.

Abstract: Provided herein is a copolymer that includes a soft block (A) and a hard block (B) comprising a tyrosine di-peptide. The copolymer can be any of AB, ABA or BAB type block copolymers. The soft block can include a PEA polymer.

Abstract: A resin composition comprises a polyphenylene sulfide resin and a nylon resin having a ?-parameter of less than 1.3 at 25° C., and has one glass transition temperature, and an image-forming apparatus comprises a latent-image supporting member, and an intermediate transfer member that supports a toner image transferred thereon from the latent-image supporting member, transfers the supported toner image onto an image receiving material, the intermediate transfer member comprising a polyphenylene sulfide resin and a nylon resin having a ?-parameter of less than 1.3 at 25° C.

Abstract: Blend (B) comprising: at least one aromatic polyimide (P1), and at least one polyarylene (P2), more than 50 wt. % of the recurring units thereof are optionally substituted arylene groups [recurring units (R2)], each of said recurring units (R2) being linked by each of its two ends to two other optionally substituted arylene groups via a direct C—C linkage, and said recurring units (R2) being a mix (M) consisting of: between 0 and 75 mole %, based on the total number of moles of recurring units (R2), of rigid rod-forming arylene units (R2a), optionally substituted by at least one monovalent substituting group, with between 25 and 100 mole %, based on the total number of moles of recurring units (R2), of kink-forming arylene units (R2b), optionally substituted by at least one monovalent substituting group. Article or part of an article comprising the blend (B).

Abstract: A blend comprising a) at least one aromatic nylon with or without inorganic nano-particles and b) at least one aliphatic/aromatic nylon comprising aromatic groups along the polymer backbone in an amount effective to prevent crystallization of the aromatic nylon. The blend reduces crystallization and resulting haze in multilayered products such as bottles, particularly in multilayered products are subjected to steam autoclave sterilization or retorting.

Abstract: A specially structured article is described which allows products made from the article to undergo a second heating without a dramatic color shift. This permits more recycled products from the material used to make the article.

Abstract: The present invention provides: a novel water-absorbing agent, which exhibits an excellent absorption capacity under a load (AAP), gel layer liquid permeation rate under a load (FRUP), saline flow conductivity (SFC), and shape-maintaining property and ball burst strength (BBS) of a swollen water-absorbing agent aggregate, and excellent persistency of these effects for a long time. The water-absorbing agent, which comprises a polymer obtained by a process including the steps of polymerizing and then crosslinking a monomer including acrylic acid and/or a salt thereof, with the water-absorbing agent being characterized by: (1) exhibiting a free swelling capacity of not less than 23 g/g (GV), a gel deformation of not more than 12.5 cm under a short-time load (0.5 hrPT), and a gel deformation deterioration of not more than 3.

Abstract: A stretched film made of a resin mixture of a polyamide resin X with an amorous polyamide resin Y and/or an ionomer resin Z. The polyamide resin X includes a diamine constitutional unit containing 70 mol % or more of m-xylylene diamine unit and a dicarboxylic acid constitutional unit containing 70 mol % or more of C6-C12 ?,?-aliphatic dicarboxylic acid unit. A film produced by melt-extruding the resin mixture can be stretched in a high ratio exceeding 4 times in at least one direction of MD and TD. The highly stretched film produced by the stretching in a ratio exceeding 4 times exhibits good gas-barrier properties and transparency.

Abstract: Disclosed are processes for synthesizing polyimides by a sequential self-repetitive reaction between poly (aryl carbodiimide) (p-CDI) or aryl diisocyanates with dianhydrides.

Abstract: Electrically conductive polymers including block copolymers, polythiophene copolymers, and regioregular polythiophene copolymers, prepared by controlled radical polymerization including RAFT and NMP polymerization methods. Polymers having low metal content can be prepared. Method of synthesizing polythiophene polymers and copolymers using RAFT and NMP polymerization are also provided. Regioregular polythiophenes are preferred. Blends with polythiophenes and non-conducting polymers can be prepared. Applications include PLEDs, sensors, and optoelectronics.

Abstract: A resin composition comprises a polyphenylene sulfide resin and a nylon resin having a ?-parameter of 1.3 or more at 25° C., and has one glass transition temperature, and an image-forming apparatus comprises: a latent-image supporting member, and an intermediate transfer member that supports a toner image transferred thereon from the latent-image supporting member and transfers the supported toner image onto an image-receiving material, wherein the intermediate transfer member comprises a polyphenylene sulfide resin and a nylon resin having a ?-parameter of 1.3 or more at 25° C., and has one glass transition temperature.

Abstract: A dihydroxyphenyl cross-linked macromolecular network is provided that is useful in artificial tissue and tissue engineering applications, particularly to provide a synthetic, implantable tissue matrix material for a wide variety of tissue types. In particular, artificial or synthetic cartilage, vocal cord material, vitreous material, soft tissue material and mitral valve material are described. In an embodiment, the network is composed of tyramine-substituted and cross-linked hyaluronan molecules, wherein cross-linking is achieved via peroxidase-mediated dityramine-linkages that can be performed in vivo. The dityramine bonds provide a stable, coherent hyaluronan-based hydrogel with desired physical properties.

Abstract: Disclosed is a process for the preparation of multilayered, shaped articles having high transparency and low haze and in which at least one layer contains at least one polyester comprising 2,2,4,4-tetramethyl-1,3-cyclobutanediol and a separate layer which contains a transamidized, homogeneous blend of a least two polyamides. The polyester component and the polyamide component have refractive indices which differ by about 0.006 to about ?0.0006. The small difference in the refractive indices enable the incorporation of regrind into one or more of the layers of the article while maintaining high clarity. These articles can exhibit improved excellent barrier properties and good melt processability while retaining excellent mechanical properties. Metal catalysts can be incorporated into one or more layers to impart oxygen-scavenging properties.

Abstract: The present disclosure relates to long-fiber-reinforced two-phase incompatible matrix-fiber composites which include fibers wetted completely by an incompatible mixture of thermoplastic materials. The resin mixture generally includes a polyester oligomer/polymer combination and a high polymer thermoplastic resin. The composites of the disclosure exhibit a reduced level of fiber attrition after melt-processing into articles, and show substantial improvements in mechanical properties.

Abstract: The patent describes homo- or hetero-bifunctional derivatives of polyethylene glycol (PEG) obtained by selectively modifying the hydroxyl end groups of commercial PEGs of different molecular weights with reactive bifunctional molecules. The synthesis process comprises steps involving sequential derivatization of PEG terminal hydroxyl groups with a bifunctional compound, purification of the bifunctional PEG obtained and/or protection of its functional groups with possible selective removal of terminal protections. The bifunctional PEGs (biPEG) obtained are usable as carriers and/or stabilizers for substances used for diagnostic, prophylactic and therapeutic purposes, conjugated to the same biocompatible biPEG support. The bifunctionalized PEG derivatives can also be used in supported synthesis processes.

Abstract: The present invention relates to the field of polymer chemistry and more particularly to multiblock copolymers and micelles comprising the same.

Abstract: A laser-decomposable resin composition, includes: (A) a polymer compound containing a structure represented by formula (0) as a repeating unit in a main chain of the polymer compound: wherein R1 represents H or a hydrocarbyl group which may have a substituent; and (B) a photo-latent or heat-latent catalyst, and a pattern-forming material, includes: a layer containing the laser-decomposable resin composition.

Abstract: A halogenated aryl ether oligomer is formed by halogenation of an aryl ether oligomer and is useful as a flame retardant for flammable macromolecular materials. Typically, the halogenated aryl ether oligomer comprises the following repeating monomeric units: wherein R is hydrogen or alkyl, especially C1 to C4 alkyl, Hal is halogen, m is at least 1, n is 0 to 3 and x is at least 2.

Abstract: Norbornene-based biocidal polymers having primary, secondary or tertiary amine or phosphine end groups, the parent monomers, processes for preparing the monomers and polymers, and their use.

Abstract: A contrast agent for magnetic resonance imaging which stably circulates in the blood for a long period and which targets solid tumors, with which clear images of cancers may be obtained is disclosed. The contrast agent for magnetic resonance imaging comprises as an effective ingredient a polymeric micelle having gadolinium (Gd) atoms in an inner core and an outer shell including hydrophilic polymer chain segments, which micelle is delivered to a tissue(s) and/or site(s) of solid tumor(s) in vivo, whose micellar structure is dissociated after being accumulated in the tissue(s) and/or site(s).

Abstract: The present invention provides polyamide curing agent compositions comprising the reaction products of (1) multifunctional amines of structure 1 where R1 is CH2CH2CH2NH2; R2, R3 and R4 independently are H or CH2CH2CH2NH2, and X is CH2CH2 or CH2CH2CH2 with (2) dimer fatty acids, optionally in combination with monofunctional fatty acids, the reaction product preferably comprising at least 15 wt % tetrahydropyrimidine-containing components. The curing agent compositions are useful for crosslinking epoxy resins to produce coatings, adhesives, floorings, composites and other articles.